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Old 07-24-2010, 02:23 AM
Patr1ck Patr1ck is offline
Motorized Bicycle Elite Member
Join Date: Apr 2010
Location: Tempe, AZ
Posts: 213
Default Re: Expansion Chambers

Do the ones available (Spooky and SBP) not only effect the power but the mileage too? I bought the one from spooky tooth and was wondering where I will notice the benefit. Is it through out the whole rpm range or will it be in the 22-23mph sweet spot area. I try to keep it in that area when riding as it seems to run the best there. I havent installed the one from Spooky yet, but need some info first. Do they cause the carb to spit alot? What will extending its outlet out to the rear of the bike and then welding the stock muffler on there do?

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